https://www.namahjournal.com/doc/Actual/Memory-transference-...
This doesn't necessarily mean that the anecdotes described there are false, but I'd be inclined to take them with a grain of salt.
Here is a link: https://www.medicaldaily.com/can-organ-transplant-change-rec...
We still don't know squats about how memory are stored. And cases like that can be a valid argument for memory and consciousness being a non-local phenomenon. Kinda like how client-server model in CS. ;-) . Are our brain just a browser?
Yeah, but not in the kidneys or the liver. Get back to us when you find sources from peer-reviewed journals.
By stretching the definition of memory, you can get to the conclusion that the whole body remembers. Scientists have found that the neurons in the spine learn when practicing motor tasks. The immune system remembers pathogens. Hormonal glands remember concentrations of relevant hormones by growing / shrinking. Muscles (including the heart) remember exercise by growing. If you play the guitar your fingertips harden, they "remember" the stress and toughen up in anticipation. And every single cell will learn by epigenetic changes. Maybe you could say that diabetes type 2 happens because the cells learn to respond less to insulin.